Improvement in wood-vise



ILFETERS. PNONUTMDGRAPOIER. WASHINGYON, D C

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ROSWELL F. COOK AND JOHN FOBES POST, OF POTSDAM,'NEW YORK;

' SAID COOK ASSIGNOR TO SAID POST.

Leners Patent No. 95,772, dazed october 12, 1869.

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The Schedule referredto in these Lettera Patent and makinpart of the'rame To all whom it may concern had to the accompanying drawings,forming part of this specification, in which- Figure l is a side view ofa vise, constructed according to our invention, showing it in conditionfor use.

Figure 2 isa side view of the pawl, removed from the vise, to expose themechanism for preventing the point of the pawl from catching the vpointOf the teeth of the ratchet when operating the vise.

Figure 3 exhibits a longitudinal section of the point of the pawl, withthe'sliding point and spring removed.

Figure .4 exhibits the sliding point of the pawl removed from the pawl.

Figui-e5 exhibits the springfor holding the sliding point in itsposition in the pawl,

Similar letters of reference indicate corresponding parts in the severalgnres.

This invention consists in certain improved means of seeming the lowerportion of the movable jaw Of such vise firmly, when an obstruction isplaced between the upper portion of the jaws when the screw is beingturned in. Also, in a certain mode of providiug for the free movement ofthe movable jaw, by the operation of the screw, whether in or, out, whennO Obstruction is placed between the upper portion of the jaws, keepingthe jaws parallel.

To enable others skilled in the art to make and use our invention, wewill proceed to describe its construction and operation.

J isa sliding bar, securely fastened to the jaw C.

His an iron ratchet. secured to th bar J and also to'the `jaw C. The barJ passes through the jaw B in a slot, such slot extending from u t'o a.I is an iron pulley, resting on its pin inthe slot through which the barJ passes.- lhe har J rests on the pulley 1.

P P are iron braces securely fastened to the jaw B.

O is an iron pawl that passes through the same slot with the bar J, andis secured to the braces P P, be-

tween which it passes, by the piu G. The pawl O extends by the pin G,turning down at right angle, forming the lever E.

`resting-on the lever E.

tially as herein described.

D is a spring, secured to the jaw B, with its point The springD,'resting On and pressing hard on the lever E, forces it down,causingit to turn On the piu G, lifting the point of the pawl up,causing it to rest against the top ofthe slotthrough which it passes.

The sliding bar J is secured to the jaw C, and rests on the pulley orroller I, and vis, kept at right angle with the jaw B- by the lever E.By this arrangement the jaw C will remain parallel with the jaw B.

Thepoint of the pawl, resting against the top of the slot, arrests thedownward motion of the lever E,

allowing the bar J to move freely inand out.

By placing the obstruction A between the upper portion of the jaws, andturning the screw in, the lower portion of the jaw C will move in,-carrying with it the bar J. By this movement the end ot' the bar J isforced up, and with it the lever E. .1

The lever E, with the -pawl O, turning on the pin G, forces the point ofthe pawl O down into the ratchet, obstructing the inward movement Oi'the jaw C, and securing it firmly.

A m is a false or'sliding-point of the pawl, the circu lar end of whichis `inserted into anA opening in the pawl, as shownby letter u in fig.3, and held in its place by the pin c passing through a slot or shortplain surface on the side of thec-ircular portion of the slid.-

ing point, as shown by letter f, iig. 4,. allowing the slide to moven orout to correspond with the 'length of the teeth of the ratchet, and isalso held in place by the spiral spring k that is also inserted in theopen'- ing n, back Ofthe point m.

By this arrangement the point of the pawl is prevented from catching thepoint of the teeth of the ratchet. The sliding point acting as a cam,carries the point ofthe pawl over the point of the tooth that it wouldotherwise catch.

I The pawl 0 and lever E, being formed from the same piece of metal, andprovided with point an, spring k,

`braces, P, spring D, roller I, and ratchet H, when constructed,combined, and arranged to operate vsubstann ROSWELL E. COOK.

Witnesses:

AMOs BLOOD, P. SIMMONS.

kJOHN FOBES Pos'r.,

